GB/T 16507.8-2022 English PDF (GBT16507.8-2022)

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GB/T 16507.8-2022: Water-tube boilers - Part 8: Installation and operation
GB/T 16507.8-2022
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 27.060.30
CCS J 98
Replacing GB/T 16507.8-2013
Water-tube boilers - Part 8: Installation and operation
ISSUED ON: MARCH 09, 2022
IMPLEMENTED ON: OCTOBER 01, 2022
Issued by: State Administration for Market Regulation;
Standardization Administration of the People's Republic of China.
Table of Contents
Foreword ... 3
Introduction ... 8
1 Scope ... 10
2 Normative references ... 10
3 Terms and definitions ... 11
4 Basic requirements ... 11
5 Foundation, support (structure) frame and steel structure ... 15
6 Drum, start-up (steam water) separator, water storage tank and header, desuperheater
... 21
7 Heating surface ... 25
8 Air preheater ... 32
9 Boiler proper piping and piping within boiler range ... 37
10 Safety accessories and instruments ... 39
11 Combustion device ... 44
12 Auxiliary devices ... 48
13 Platforms, escalators, railings ... 49
14 Hydrostatic test ... 49
15 Furnace wall masonry, pouring and insulation ... 51
16 Chemical cleaning, flushing and purging ... 52
17 Conditioning ... 55
18 Quality acceptance ... 56
19 Operation ... 57
Annex A (informative) Allowable deviation of fire grate installation for layer-fired
boilers ... 61
Bibliography ... 63
Water-tube boilers - Part 8: Installation and operation
1 Scope
This document specifies the requirements for the installation, commissioning, quality
inspection and operation of the water-tube boiler proper and the piping within the scope
of the boiler.
This document applies to water-tube boilers defined in GB/T 16507.1. The
transformation and repair of water-tube boilers can use this document as reference.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 1576, Water quality for industrial boilers
GB/T 2900.48, Electrotechnical terminology of boilers
GB/T 12145, Quality criterion of water and steam for power plant and steam-
generating equipment
GB/T 16507.1, Water-tube boilers - Part 1: General requirements
GB/T 16507.4, Water-tube boilers - Part 4: Strength calculation of pressure parts
GB/T 16507.6, Water-tube boilers - Part 6: Inspection, testing and acceptance
GB/T 16507.7, Water-tube boilers - Part 7: Safety appurtenances and instruments
GB 50016, Code for Fire Protection Design of Buildings
GB 50041, Standard for design of boiler plant
GB 50204, Code for quality acceptance of concrete structure construction
GB 50205, Standard for acceptance of construction quality of steel structures
GB 50273, Standard for construction and acceptance of boiler installation
engineering
GB 50275, Code for construction and acceptance of fan, compressor and pump
installation
DL/T 777, Boiler refractory material for thermal power plant
DL/T 852, Guide of boiler start-up commissioning
DL/T 902, Abrasion resistant refractory material
NB/T 47013 (all parts), Non-destructive testing of pressure equipment
3 Terms and definitions
The terms and definitions defined in GB/T 2900.48 and GB/T 16507.1 as well as the
followings apply to this document.
3.1 commissioning
A general term for that boilers and related equipment and systems are adjusted,
calibrated and tested in accordance with the design and equipment technical documents
after installation.
NOTE: Commissioning is short for adjustment and test.
3.2 commissioning of individual equipment and system
Dynamic inspection and test for a single piece of equipment or system.
3.3 start up and commissioning
On the basis of completing the commissioning of individual equipment and system, the
start-up commissioning that is jointly participated by commissioner, producer and
constructer to carry out the joint electrical and thermal automation of the complete set
of steam turbine and boiler equipment.
4 Basic requirements
4.1 The location and building where the boiler is installed shall meet the relevant
regulations of GB 50016 and GB 50041 and meet the requirements of the design
drawings. The installation position of the piping within the boiler range shall keep a
sufficient safe distance from crowded places (such as control room, duty room). When
the safety distance requirements cannot be met, the building shall take necessary
explosion-proof and isolation measures.
4.2 Boiler installation shall be carried out after the basic civil work is completed and
accepted.
4.3 Before installing all parts of the boiler, relevant technical documents and quality
4.13 During the installation and construction process, it is not allowed to smash holes
on building components, damage load-bearing components, or perform welding
construction on component reinforcements without structural checks.
4.14 During the installation and construction process, measures shall be taken to prevent
noise, dust, arc light and radiation pollution. Reduce construction waste discharge.
4.15 During the boiler installation process, the constructer shall implement the
requirements of the quality assurance system. Accept the supervision and inspection of
the establishment and operation of the quality assurance system by the inspection
agency as well as the supervision-inspection of items related to safety performance.
4.16 During the boiler installation process, the constructer shall conduct non-
destructive testing on the welded joints of boiler pressure elements and components in
accordance with NB/T 47013 and meet the following requirements.
a) The testing method shall be selected according to the design, process and technical
conditions. Develop a corresponding testing process. If multiple non-destructive
testing methods are used for testing, they shall be evaluated according to their
respective acceptance standards. The non-destructive testing can be considered as
accepted only after all the tests are accepted. When the time-of-flight diffraction
method (TOFD) is selected, it shall be combined with the pulse-echo method (PE)
for testing. The testing conclusion is judged comprehensively based on the results
of TOFD and PE methods.
b) The non-destructive testing of welded joints shall be carried out after the shape,
size and appearance quality inspection is accepted. Materials with a tendency to
delayed cracking shall be subjected to non-destructive testing 24h after welding.
Welded joints prone to reheat cracking shall be retested by surface non-
destructive testing after final heat treatment.
c) The technical level of non-destructive testing and the quality level of welded joints
meet the following requirements:
1) During magnetic particle testing, the quality level shall not be lower than level
I.
2) During penetrant testing, the quality level shall not be lower than level I.
3) Radiographic testing technology level shall not be lower than level AB. The
quality level of welded joints shall not be lower than level II.
4) The technical level of pulse echo ultrasonic testing and phased array ultrasonic
testing shall not be lower than level B. The quality level of welded joints shall
not be lower than level I.
5) The ultrasonic testing technology level of diffraction time-of-flight method
shall not be lower than level B. The quality level of welded joints shall not be
lower...